#include <iostream>
using namespace std;
#include <stdio.h>
#define OTL_ORA8 // Compile OTL 4.0/OCI8
//#define OTL_ORA8I // Compile OTL 4.0/OCI8i
//#define OTL_ORA9I // Compile OTL 4.0/OCI9i
#include <otlv4.h> // include the OTL 4.0 header file
otl_connect db; // connect object
void insert()
// insert rows into table
{
otl_stream o(50, // buffer size
"insert into test_tab values(:f1<int>,:f2<char[31]>)",
// SQL statement
db // connect object
);
char tmp[32];
for(int i=1;i<=100;++i){
sprintf(tmp,"Name%d",i);
o<<i<<tmp;
}
}
void select()
{
otl_stream i(1, // buffer size
"begin "
" my_pkg.my_proc(:f1<int,in>,:f2<int,in>, "
" :str1<char[100],out[200]>, "
// :str1 is an output PL/SQL table of strings parameter
" :cur1<refcur,out[50]>, "
" :cur2<refcur,out[50]>); "
// :cur1, :cur2 are a bind variable names, refcur -- their types,
// out -- output parameter, 50 -- the buffer size when this
// reference cursor will be attached to otl_refcur_stream
"end;", // PL/SQL block that calls a stored procedure
db // connect object
);
i.set_commit(0); // set stream "auto-commit" to OFF.
otl_cstr_tab<200,101> str1; // PL/SQL table of char[200][101]
float f1;
char f2[31];
otl_refcur_stream s1, s2; // reference cursor streams for reading rows.
i<<8<<4; // assigning :f1 = 8, :f2 = 4
i>>str1; // reading :str1 from the stream
i>>s1; // initializing the refeence cursor stream with the output
// reference cursor :cur1
i>>s2; // initializing the refeence cursor stream with the output
// reference cursor :cur2
cout<<"STR1_Len="<<str1.len()<<endl;
for(int j=0;j<str1.len();++j)
if(str1.is_null(j))
cout<<"STR1["<<j<<"]=NULL"<<endl;
else
cout<<"STR1["<<j<<"]="<<str1.v[j]<<endl;
cout<<"=====> Reading :cur1..."<<endl;
while(!s1.eof()){ // while not end-of-data
s1>>f1>>f2;
cout<<"f1="<<f1<<", f2="<<f2<<endl;
}
cout<<"=====> Reading :cur2..."<<endl;
while(!s2.eof()){ // while not end-of-data
s2>>f1>>f2;
cout<<"f1="<<f1<<", f2="<<f2<<endl;
}
s1.close(); // closing the reference cursor
s2.close(); // closing the reference cursor
}
int main()
{
otl_connect::otl_initialize(); // initialize OCI environment
try{
db.rlogon("scott/tiger"); // connect to Oracle
otl_cursor::direct_exec
(
db,
"drop table test_tab",
otl_exception::disabled // disable OTL exceptions
); // drop table
otl_cursor::direct_exec
(
db,
"create table test_tab(f1 number, f2 varchar2(30))"
); // create table
// create a PL/SQL package
otl_cursor::direct_exec
(db,
"CREATE OR REPLACE PACKAGE my_pkg IS "
" "
" TYPE my_cursor IS REF CURSOR; "
" TYPE my_tab IS TABLE OF VARCHAR2(100) "
" INDEX BY BINARY_INTEGER; "
" "
" PROCEDURE my_proc "
" (f1_in IN NUMBER, "
" f2_in IN NUMBER, "
" str1 OUT my_tab, "
" cur1 OUT my_cursor, "
" cur2 OUT my_cursor); "
" "
"END; "
);
otl_cursor::direct_exec
(db,
"CREATE OR REPLACE PACKAGE BODY my_pkg IS "
" "
" PROCEDURE my_proc "
" (f1_in IN NUMBER, "
" f2_in IN NUMBER, "
" str1 OUT my_tab, "
" cur1 OUT my_cursor, "
" cur2 OUT my_cursor) "
" IS "
" lv_cur1 my_cursor; "
" lv_cur2 my_cursor; "
" BEGIN "
" FOR i IN 1..4 LOOP "
" str1(i) := 'Line'||i; "
" END LOOP; "
" str1(5) := NULL; "
" OPEN lv_cur1 FOR "
" SELECT * FROM test_tab "
" WHERE f1>=f1_in "
" AND f1<=f1_in*2; "
" OPEN lv_cur2 FOR "
" SELECT * FROM test_tab "
" WHERE f1>=f2_in "
" AND f1<=f2_in*2; "
" cur1 := lv_cur1; "
" cur2 := lv_cur2; "
" END; "
" "
"END; "
);
insert(); // insert records into table
select(); // select records from table
}
catch(otl_exception& p){ // intercept OTL exceptions
cerr<<p.msg<<endl; // print out error message
cerr<<p.stm_text<<endl; // print out SQL that caused the error
cerr<<p.var_info<<endl; // print out the variable that caused the error
}
db.logoff(); // disconnect from Oracle
return 0;
}
STR1_Len=5
STR1[0]=Line1
STR1[1]=Line2
STR1[2]=Line3
STR1[3]=Line4
STR1[4]=NULL
=====> Reading :cur1...
f1=8, f2=Name8
f1=9, f2=Name9
f1=10, f2=Name10
f1=11, f2=Name11
f1=12, f2=Name12
f1=13, f2=Name13
f1=14, f2=Name14
f1=15, f2=Name15
f1=16, f2=Name16
=====> Reading :cur2...
f1=4, f2=Name4
f1=5, f2=Name5
f1=6, f2=Name6
f1=7, f2=Name7
f1=8, f2=Name8
Copyright © 1996-2024, Sergei Kuchin, email: skuchin@gmail.com, skuchin@gmail.com .
Permission to use, copy, modify and redistribute this document for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.